package cn.tedu._07springaop.aop;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

import java.util.Arrays;

@Aspect
@Component
public class LogAspect {

    @Before("execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))")
    public void beforeMethod(JoinPoint joinPoint){
        String name = joinPoint.getSignature().getName();
        String args = Arrays.toString(joinPoint.getArgs());
        System.out.println("[1-开始日志]:前置通知，"+name+"方法执行，参数为："+args);
    }
    @AfterReturning(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))",returning = "r")
    public  void afterReturningMethod(JoinPoint joinPoint,Object r){
        String name = joinPoint.getSignature().getName();
        System.out.println("2-返回通知:"+name+"方法结束，结果为:"+r);
    }
    @AfterThrowing(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))",throwing = "ex")
    public void afterThrowingMethod(JoinPoint joinPoint,Throwable ex){
        String name = joinPoint.getSignature().getName();
        System.out.println("3-异常通知："+name+"方法异常，提示消息为："+ex.getMessage());
    }
    @After(value ="execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))" )
    public void afterMethod(JoinPoint joinPoint){
        String name = joinPoint.getSignature().getName();
        System.out.println("4-后置通知："+name+"方法彻底结束执行");
    }
    @Around(value ="execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))"  )
    public Object aroundMethod(ProceedingJoinPoint joinPoint){
        Object result=null;
        try{
            System.out.println("环绕1-前置通知");
            result=joinPoint.proceed();
            System.out.println("环绕2-返回通知");
        }catch (Throwable e){
            System.out.println("环绕3-异常通知");
            throw new RuntimeException(e);
        }
        finally {
            System.out.println("环绕4-后置通知");
        }
        return result;
    }


}
